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Proceedings Paper

Exploring model based engineering for large telescopes: getting started with descriptive models
Author(s): R. Karban; M. Zamparelli; B. Bauvir; B. Koehler; L. Noethe; A. Balestra
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Paper Abstract

Large telescopes pose a continuous challenge to systems engineering due to their complexity in terms of requirements, operational modes, long duty lifetime, interfaces and number of components. A multitude of decisions must be taken throughout the life cycle of a new system, and a prime means of coping with complexity and uncertainty is using models as one decision aid. The potential of descriptive models based on the OMG Systems Modeling Language (OMG SysMLTM) is examined in different areas: building a comprehensive model serves as the basis for subsequent activities of soliciting and review for requirements, analysis and design alike. Furthermore a model is an effective communication instrument against misinterpretation pitfalls which are typical of cross disciplinary activities when using natural language only or free-format diagrams. Modeling the essential characteristics of the system, like interfaces, system structure and its behavior, are important system level issues which are addressed. Also shown is how to use a model as an analysis tool to describe the relationships among disturbances, opto-mechanical effects and control decisions and to refine the control use cases. Considerations on the scalability of the model structure and organization, its impact on the development process, the relation to document-centric structures, style and usage guidelines and the required tool chain are presented.

Paper Details

Date Published: 9 July 2008
PDF: 12 pages
Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70171I (9 July 2008); doi: 10.1117/12.788739
Show Author Affiliations
R. Karban, European Southern Observatory (Germany)
M. Zamparelli, European Southern Observatory (Germany)
B. Bauvir, European Southern Observatory (Germany)
B. Koehler, European Southern Observatory (Germany)
L. Noethe, European Southern Observatory (Germany)
A. Balestra, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 7017:
Modeling, Systems Engineering, and Project Management for Astronomy III
George Z. Angeli; Martin J. Cullum, Editor(s)

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